Floor-clamp



I'. E. ALLEN.

FLOOR CLAMP.

(No Model.)

Patented June 26, 1888.

ATTORNEYS WLTNBssEs.

N. Ferias maa-mmapw, wmmqw n4 c r clamp.

UNITED STATES PATENT OFFICE.

FREDERICK E. ALLEN, OENORTII GRAFTON, MASSACHUSETTS.

FLOOR-CL-AM P.

SPECIFICATION forming part of Letters Patent No. 280,113, dated June 26, 1883. Applicant nlell April es, less. (No modell To @ZZ whom, it may concern.'

Be it known that I, FREDERICK E. ALLEN, oli' North Grafton, ill the county of Torcester 'and State of h'Iassacllusetts, have il'lvented certain new and useful Improvements in Floor- Clamps, and I do hereby declare tllat the fol- ]owillg is a i'ull, clear, and exact description ot' ille invention, wllicll will enable others skilled ill the art to wllich it appcrtains to nlake alld use the salllc, reference being had to the aceolllpanyng drawillgs, which i'orln a part of this specification, and ill which Figure l is a side view ot' .my ilnproved i'loor- Fig, 2 is a top view of the same. Fi :i is a cross-section tllrougll lille .r a' in Eig. 2, and Fig. l is a longitudinal sectional view ot' the device.

Similar letters ot' reference indicate corresponding parts ill all tlle'lignres.

My invention. has relation to tllat class of illlplements known as {lool-clamps, 7 wllicll nlay, however, be adapted for a variety of other purposes, and it consists ill the improved construction and colllbination of parts of a device ot' that class, as heleinafter more t'ully described and clailned.

In the accon'lpanying drawings, A represents ahollow boX or casil'lg, kthe outer elld of wllicll is sllaped to forln a jaw, 3. The casing A is cast with projections C, wllich form bearill forthe lever D, which is pivoted upon a bolt, d, between the ears or projections C.

The lever D is bent to forni aA shoulder, E, throllgh which a bolt, E, is inserted, tllat forms a fulcrum for the bar G, the outer end of which is provided with a serrated head, II, adapted to engage the teeth of the sliding rack-bar I, at the outer end ot' which is the head or abutlllent J. The `head H of bar G is provided with a headed screw, K, which projects down through a longitudinal. slot, l?, in the sliding` rack-bar, the head of the bolt or screw K being larger than the width of the slot, so that screw K will form a guide, and at the same time prevent arm or bar G from being raised too great a distance from the sliding rack-bar, with' which it engages.

Hinged upon opposite sides of the box A are the dogs L, which are provided with pro- 50 jectilg lips Z, for the purposes hereinafter state( and hinged upon the rear end of -the part A is the catch or pawl M, which is adapted to engage the sliding rack-bal.` I and hold it ill its adjust-ed position.

From the foregoing description, taken ill connection with the drawings, the operatioll of my illlproved licor-clamp will.\` readily be understood. In using it thcjaw is liked ill one ot' tllej oists or hoor-beams, or against the wall, it' near enough to it, and the head or abutment .I is placed against the edge ot' the board or plank, which is to be forced into position in the flooring. By now working the lever D it will be seen that the sliding rackbar I is gradually worked out o1" its box or casing A, which remaills stationary, tllus foreillg the board against which the abutment .I is placed illto position. It' desired, box A may be fastened ill the joists by nleans oit' the dogs L, as shown in Fig. l; and when it is desired to remove the device lfrom one place to another the dogs may be released by placing the claw of a llalnlner ullderneath the lips or projections I. y

Anlollg other purposes for which this implement may be successfully used is that ot' a carpet-stretcher, and its llseas such will readily suggest itself.

Having thus described my i nvention, I cl ai lll and desire to secure by Letters Iatent ot' the United States- The improved loor-clanlp herein sllowll alld described, -composed of the box A, having fixed jawd and ears or projections C, lever D, bent to i'orln the shonlder'E, arnl or bar G, provided with the serrated head H, having guide-screw K, rack-bar I, slotted longitudi nally, and having` the head or abutment J,

hinged catch-pawl M, adapted to engage the rack-bar, and dogs L L, pivoted upon opposite sides of box A, and provided with the rear ward-proiecting lips l, the whole constructed and combined to operate substantially in the manner and for the purpose shown and set forth.

In testimony that I claim the foregoing as iny own I have hereunto aiiXed nly signature ill presence of two witnesses.

FREDERICK E. ALLEN.

lVitnesses:

WILLIAM T. BAKKER, ELisHll D. HoLBRooK. 

